How is the fog signal at West Point Light activated?

The correct activation method for the fog signal at West Point Light is through keying the mic five times on Channel 78A. This method is commonly utilized to activate sound signals in navigational aids, particularly in situations where visibility is poor. The use of a specific maritime channel ensures that only authorized personnel can activate the fog signal, thereby preventing unintentional triggers and maintaining the signal's reliability for vessels navigating nearby.

Understanding this activation mechanism is important in ensuring that mariners can effectively communicate with navigational aids and utilize the correct protocols for safety. The other options, while plausible methods for activating various systems, do not align with the standardized procedure explicitly used at West Point Light.